U.S. manufacturers appear to have fallen back into a slump as they face rising prices and lower demand because of President ...

March’s ISM Manufacturing PMI fell to 49, signaling a contraction after two months of growth and raising concerns about potential stagflation due to slowing activity and rising prices.

But there’s also the ISM (industrial, scientific ... So you could get 4 radios going on one Arduino if you had too and could manage the power, RF, and other issues involved.